A083045 Main diagonal of table A083044.

1, 6, 17, 35, 68, 122, 224, 383, 656, 1092, 1841, 2978, 4859, 7835, 12776, 20291, 32664, 51422, 82485, 129720, 204821, 319482, 506060, 789872, 1237733, 1927494, 3024318, 4687259, 7274921, 11271293, 17578760, 27133793, 42125475, 64909160

Offset: 0

Author

Paul D. Hanna, Apr 18 2003

Keywords

• nonn

Crossrefs

Cf. A083044, A083047, A083050, A083046.

Formula

a(n) = T(n, n), where T(n, 0) = floor(n*x/(x-1)) + 1, T(n, k+1) = ceiling(x*T(n, k)), for n >= 0, k >= 0, with x=3/2.